/*- * Free/Libre Near Field Communication (NFC) library * * Libnfc historical contributors: * Copyright (C) 2017 Philippe Teuwen * See AUTHORS file for a more comprehensive list of contributors. * Additional contributors of this file: * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * 1) Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * 2 )Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. * * Note that this license only applies on the examples, NFC library itself is under LGPL * */ /** * @file nfc-barcode.c * @brief Reads a NFC Barcode tag */ #ifdef HAVE_CONFIG_H # include "config.h" #endif // HAVE_CONFIG_H #include #include #include #include #include #include #include #include "nfc-utils.h" #define MAX_FRAME_LEN 264 static nfc_device *pnd; bool verbose = false; static void print_usage(char *argv[]) { printf("Usage: %s [OPTIONS]\n", argv[0]); printf("Options:\n"); printf("\t-h\tHelp. Print this message.\n"); printf("\t-q\tVerbose mode.\n"); } static bool decode_barcode(uint8_t *pbtBarcode, const size_t szBarcode) { if (verbose) { printf("Manufacturer ID field: %02X\n", pbtBarcode[0]); switch (pbtBarcode[0]) { case 0xb7: printf("Manufacturer: Thinfilm\n"); break; default: printf("Manufacturer: unknown\n"); break; } } if (verbose) { printf("Data Format Field: %02X\n", pbtBarcode[1]); } switch (pbtBarcode[1]) { case 0: printf("Data Format Field: Reserved for allocation by tag manufacturer\n"); return false; break; case 1: case 2: case 3: case 4: switch (pbtBarcode[1]) { case 1: printf("http://www."); break; case 2: printf("https://www."); break; case 3: printf("http://"); break; case 4: printf("https://"); break; } for (uint8_t i = 2; i < 15; i++) { if ((pbtBarcode[i] == 0xfe) || (i == 14)) { pbtBarcode[i] = '\n'; pbtBarcode[i + 1] = 0; break; } } printf("%s", (char *)pbtBarcode + 2); break; case 5: printf("EPC: "); for (uint8_t i = 0; i < 12; i++) { printf("%02x", pbtBarcode[i + 2]); } printf("\n"); break; default: printf("Data Format Field: unknown (%02X)\n", pbtBarcode[1]); printf("Data:"); for (uint8_t i = 2; i < szBarcode - 2; i++) { printf("%02x", pbtBarcode[i]); } printf("\n"); break; } return true; } int main(int argc, char *argv[]) { int arg; // Get commandline options for (arg = 1; arg < argc; arg++) { if (0 == strcmp(argv[arg], "-h")) { print_usage(argv); exit(EXIT_SUCCESS); } else if (0 == strcmp(argv[arg], "-v")) { verbose = true; } else { ERR("%s is not supported option.", argv[arg]); print_usage(argv); exit(EXIT_FAILURE); } } nfc_context *context; nfc_init(&context); if (context == NULL) { ERR("Unable to init libnfc (malloc)"); exit(EXIT_FAILURE); } // Try to open the NFC reader pnd = nfc_open(context, NULL); if (pnd == NULL) { ERR("Error opening NFC reader"); nfc_exit(context); exit(EXIT_FAILURE); } // Initialise NFC device as "initiator" if (nfc_initiator_init(pnd) < 0) { nfc_perror(pnd, "nfc_initiator_init"); nfc_close(pnd); nfc_exit(context); exit(EXIT_FAILURE); } printf("NFC reader: %s opened\n\n", nfc_device_get_name(pnd)); nfc_modulation nm; nm.nmt = NMT_BARCODE; nm.nbr = NBR_106; nfc_target ant[1]; // List NFC Barcode targets if ((nfc_initiator_list_passive_targets(pnd, nm, ant, 1)) == 1) { if (verbose) { for (uint8_t i = 0; i < (&ant[0])->nti.nti.szDataLen; i++) { printf("%02x", (&ant[0])->nti.nti.abtData[i]); } printf("\n"); } decode_barcode((&ant[0])->nti.nti.abtData, (&ant[0])->nti.nti.szDataLen); } nfc_close(pnd); nfc_exit(context); exit(EXIT_SUCCESS); }